As far as I remember the box is just a simple D/A converter creating a stepped approximation of sine wave. The DC level of each step is syncronously (GPIB) measured by a 3458A and the rms value is calculated from that data by a special software. The system relies on the speed and DC accurary of the 3458A, the source itself is not accurate or stable.
2013/4/23, cfo <[email protected]>: > Gents > > This message was originally posted in time-nuts , due to me goofing up. > Well .... > > > > > I have just bought a NIST DSS5 unit on the 'Bay , # 190818033819 > > It's supposed to be a 0..7v AC reference standard , but i have no info > about the unit or more important the GPIB command set. > > I don't expect NIST to keep the commandset (manuals) a secret , but > doesn't have any contacts at NIST. > > I would really appreciate if anyone on the list could help me , in getting > a NIST contact. Otherwise i suppose i have bought an expensive (EU > shipping) box of components. > > I have found a bit of info here http://tiny.cc/tvzzvw > > > TIA CFO , Denmark > > _______________________________________________ > volt-nuts mailing list -- [email protected] > To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/volt-nuts > and follow the instructions there. > _______________________________________________ volt-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/volt-nuts and follow the instructions there.
